Chapter 8464 — Customs Tariff Headings

Bridge Saw with Tilting Table for Marble

A heavy-duty bridge-style sawing machine with a tilting table for precise angled cuts in marble blocks and slabs. It is designed for cold working stone, a mineral material, and falls under tariff item 8464.10.00 as a sawing machine.

Circular Blade Stone Slab Saw

A stationary sawing machine with a large rotating circular diamond blade for cutting stone slabs to custom dimensions. It is dedicated equipment for cold working stone and like mineral materials, fitting tariff item 8464.10.00.

CNC Stone Bridge Saw

A computer numerically controlled bridge saw for automated precision cutting of natural stone slabs. It is programmable for complex shapes and miters, and falls under tariff item 8464.10.00 as a sawing machine for stone.

Concrete Slab Circular Saw

A heavy-duty circular sawing machine for cutting cured concrete slabs used in construction projects. It falls under tariff item 8464.10.00 for working concrete as a mineral material.

Diamond Wire Saw for Granite Slabs

A sawing machine using diamond-impregnated wire to cut large granite slabs with precision for countertops and construction. It falls under tariff item 8464.10.00 as a sawing machine for stone materials.

Gang Saw for Quartz Stone Blocks

A multi-blade gang saw designed to simultaneously slice large quartz stone blocks into thin slabs for surface fabrication. It falls under tariff item 8464.10.00 due to its sawing function for hard mineral materials.

Glass Block Cutting Band Saw

A vertical band saw machine for cold working glass blocks, producing decorative and structural glass elements. It falls under tariff item 8464.10.00 as a sawing machine for cold working glass.

Porcelain Tile Production Gang Saw

An industrial gang sawing machine for high-volume cutting of porcelain tiles from large blocks in factory settings. It falls under tariff item 8464.10.00 for sawing ceramic mineral materials.

Tile Cutting Wet Saw for Ceramics

A tabletop wet sawing machine optimized for precise cuts in ceramic and porcelain tiles using a water-cooled diamond blade. It falls under tariff item 8464.10.00 for sawing ceramic mineral materials.

Waterjet Stone Cutting Saw

A high-pressure waterjet sawing machine using abrasive garnet for intricate stone pattern cutting. It falls under tariff item 8464.10.00 as an advanced sawing technology for stone and mineral materials.

Architectural Glass Corner Grinding Machine

A machine that grinds 45-degree mitred corners on large glass panels for frameless shower doors and facades. It is specifically for cold working glass, falling under this tariff item as a grinding machine for glass.

Asbestos-Cement Sheet Polisher

A wide-belt polishing machine designed to finish asbestos-cement roofing and siding sheets to a uniform thickness. It operates through abrasive belts that grind and polish the mineral-based material, falling under the tariff item for grinding or polishing machines for asbestos-cement or like mineral materials.

Automotive Windshield Polishing Machine

A specialized polisher that removes scratches and restores clarity on laminated automotive safety glass. It falls under this tariff item as a polishing machine for cold working glass, even in vehicle repair contexts.

Ceramic Substrate Grinder

A grinding machine for alumina or aluminum nitride ceramic substrates used in power electronics and LED packaging. This machine ensures substrate flatness for reliable electronic performance. It is classified under tariff item 8464.20.00 as a grinding machine for ceramics, a like mineral material.

Ceramic Tile Grinder

A bridge-style grinder used to rectify the edges and surfaces of ceramic tiles to precise dimensions after firing. This machine falls under the tariff item as it is specifically designed for grinding ceramic materials, a category explicitly listed under mineral materials.

CNC Glass Edge Grinding Machine

A CNC machine that grinds and polishes the edges of flat glass sheets to precise specifications for architectural and automotive applications. This machine falls under the tariff item as a grinding and polishing machine for glass.

CNC Granite Surface Grinder

A CNC machine designed for precision grinding of flat surfaces on granite slabs used in countertops and monuments. It falls under this tariff item as a grinding machine specifically for working stone, a mineral material.

Concrete Floor Grinder

A planetary head grinder used for leveling and smoothing concrete floors at construction sites. This machine is classified under the tariff item as it is a grinding machine for concrete, a material considered a 'like mineral material' in the chapter notes.

Concrete Wafer Polishing Machine

A high-precision polisher for engineered concrete wafer substrates used in advanced power modules. This machine is classified under tariff item 8464.20.00 as a polishing machine for concrete, a like mineral material. It provides an alternative substrate for SiC power semiconductors.

Crystal Boule Grinder

A precision grinding machine used to grind semiconductor crystal boules to exact diameters and flats indicating conductivity type and resistivity. This machine is essential for wafer manufacturing equipment. It is classified under tariff item 8464.20.00 as a grinding machine for mineral crystal materials.

Czochralski Crystal Grinder

A grinder specifically for Czochralski-grown silicon boules, preparing ingots for wafer production in the CZ process. This machine is classified under tariff item 8464.20.00 as a grinding machine for mineral crystal materials. It ensures precise diameters for subsequent wafer slicing.

Diamond Wire Glass Grinding Saw

A hybrid machine that uses diamond wire for grinding and polishing glass edges in solar panel production. Despite its saw-like appearance, it performs cold working of glass through grinding and polishing, placing it under this tariff item.

Flat Glass Surface Polishing Machine

An industrial polisher that uses abrasive pads to achieve a mirror-finish on float glass surfaces for mirrors and display cases. This machine is classified under the tariff item as a polishing machine for cold working glass.

Float Glass Continuous Polisher

A mass production polisher that processes continuous float glass ribbon post-tin bath. It falls under this tariff item as a polishing machine for inline cold working of glass in primary glassmaking.

Gallium Arsenide Wafer Polisher

A polishing machine for compound semiconductor wafers like gallium arsenide, bringing surfaces to a mirror finish required for device fabrication. This machine is classified under tariff item 8464.20.00 as a polishing machine for mineral crystal materials. It is essential for producing high-quality semiconductor wafers.

Glass Bottle Neck Polishing Machine

A high-speed polishing machine designed to smooth and finish the necks of glass bottles used in beverage packaging lines. It operates through cold working processes after the bottles are formed, ensuring smooth, contamination-free surfaces for food-grade applications. This machine falls under tariff item 8464.20.00 as a grinding or polishing machine for cold working glass.

Glass Edge Polisher

A straight-line machine for bevelling and polishing the edges of flat glass sheets used in windows and mirrors. This machine falls under the tariff item as it performs cold working of glass through polishing processes.

Glass Lens Grinding and Polishing Machine

A precision machine used for grinding and polishing ophthalmic and camera glass lenses to exact curvatures. This cold working process is essential for achieving the precise optical properties required for vision correction and imaging. It is classified under tariff item 8464.20.00 as a grinding or polishing machine for cold working glass.

Glass Lens Grinding Machine for Fiber Optics

This is a precision grinding machine for cold working glass lenses used in fiber optic transceivers. It shapes and polishes glass to create microlenses for VCSEL coupling in data center optics. It falls under this tariff item as a machine-tool for cold working glass.

Glass Tabletop Beveling Machine

A straight-line beveling machine that creates decorative angled edges on glass tabletops and shelves. This dedicated cold grinding and polishing machine is used in furniture glass production to achieve precise, smooth edges. It falls under tariff item 8464.20.00 as a grinding or polishing machine for cold working glass.

Handheld Glass Polishing Tool

A portable pneumatic polisher designed for on-site restoration of glass surfaces such as storefront windows. Although manually guided, it is classified under tariff item 8464.20.00 as a glass-specific cold polishing mechanism. It is built for industrial-strength polishing tasks in commercial settings.

Insulated Glass Unit Edge Grinder

An edge grinder for insulated glass units that grinds the edges of dual-pane glass panels to prepare them for window sealing. This cold process ensures compatibility with spacers and sealants, contributing to energy-efficient building standards. It is classified under tariff item 8464.20.00 as a grinding machine for cold working glass.

LCD Display Glass Polishing Line

An automated continuous polishing line for thin glass substrates used in LCD and OLED flat panel displays. This specialized cold working machine ensures defect-free surfaces through multiple polishing stations. It is classified under tariff item 8464.20.00 as a polishing machine for cold working glass in electronics manufacturing.

Marble Slab Polishing Machine

An automated polishing line for creating high-gloss finishes on marble slabs for flooring and wall tiles. This machine is classified under the tariff item as a polishing machine dedicated to stone, specifically marble, a mineral material.

Mirror Silvering Pre-Polisher

A polishing machine that prepares glass substrates for vacuum silvering in mirror production. Surface perfection is critical before metallization to achieve high reflectivity. It is classified under tariff item 8464.20.00 as a polishing machine for cold working glass.

Porcelain Edge Grinding Machine

A CNC-controlled grinder for chamfering and smoothing porcelain slab edges for high-end bathroom vanities. This machine falls under the tariff item as it is a grinding machine for ceramics, a mineral material.

Quartz Glass Tube Polishing Machine

A centerless polishing machine that finishes the outer diameter of quartz glass tubes used in lighting and laboratory applications. This cold working process maintains the thermal properties of the quartz. It is classified under tariff item 8464.20.00 as a polishing machine for cold working specialty glass.

Quartz Wafer Lapping Machine

A double-sided lapping machine for achieving flatness tolerances on quartz crystal wafers used in oscillators. Quartz is a stone, so this machine falls under the tariff item as a grinding or polishing machine for stone.

Sapphire Wafer Grinder

This is a precision grinder for synthetic sapphire wafers used in LED epitaxy and RF devices. It grinds sapphire, a hard mineral material (corundum), to optical tolerances. It is classified here as a machine-tool for working mineral materials.

Semiconductor Glass Wafer Grinder

A precision grinder that prepares quartz and borosilicate glass wafers for semiconductor masking and testing. This high-tech application of glass cold working achieves sub-micron tolerances. It is classified under tariff item 8464.20.00 as a grinding machine for cold working glass.

Shower Door Glass Edger

A pencil and flat edger for tempered glass shower enclosure panels. This glass-specific cold working machine rounds edges for safety and aesthetic purposes. It is classified under tariff item 8464.20.00 as a grinding or polishing machine for cold working glass.

Silicon Carbide Wafer Lapper

This is a lapping machine for silicon carbide (SiC) wafers used in power semiconductors. It achieves sub-micron flatness for epitaxial growth, working on SiC, a ceramic mineral material. It is classified here as a grinding or polishing machine for mineral materials.

Silicon Wafer Lapping Machine

This is a lapping machine for silicon wafers that achieves ultra-flat surfaces within tight dimensional tolerances before fabrication. It works on silicon, a mineral material, and is used in wafer preparation. It is classified here as a grinding or polishing machine for mineral materials.

Stone Crystal boule Grinder

A precision grinder for semiconductor crystal boules like quartz or sapphire to exact diameters before wafer slicing. This machine falls under the tariff item as it is a grinding machine for stone or mineral materials.

Architectural Glass Notching Machine

Heavy-duty machine creating precise notches in oversized glass panels for structural glazing systems and curtain walls using carbide-tipped milling tools at ambient temperature. This machine tool works glass through cold milling, falling under tariff item 8464.90.00.

Automatic Glass Beveling Machine

Automated equipment that creates beveled edges on glass plates for decorative mirrors, tabletops, and furniture components through grinding wheels operating at ambient temperatures. This cold working process falls under tariff item 8464.90.00 as a machine-tool for working glass without heat.

Automotive Glass Corner Radius Machine

A high-speed machine that applies safety radiused corners to automotive sidelite and backlite glass through diamond wheel profiling in a cold process. This machine-tool for cold working glass is classified under tariff item 8464.90.00, as it shapes glass without heat for automotive applications.

Bottle Glass Neck Polishing Machine

A rotary machine that smooths and polishes glass bottle necks after forming to ensure proper cap sealing surfaces through mechanical brushing and polishing compounds. This post-forming cold working process falls under tariff item 8464.90.00 as a machine-tool for cold working glass.

Ceramic Press Edge Chippers

High-speed rotary chipping machines that remove flash from pressed ceramic tile edges after molding. These machine tools work ceramic materials through cold mechanical processes, falling under tariff item 8464.90.00 for machine-tools for working ceramics and like mineral materials.

Ceramic Tile Edge Polisher

Automated polishing machine for finishing ceramic tile edges using abrasive wheels to achieve bullnose or chamfer profiles. This equipment works ceramic mineral materials through cold abrasion, qualifying under tariff item 8464.90.00 as a machine-tool for working ceramics.

CNC Glass Edging Machine

A computer numerically controlled machine designed for precision edging and beveling of flat glass sheets used in windows, mirrors, and architectural panels. It falls under tariff item 8464.90.00 as a machine-tool for cold working glass through mechanical processes.

CNC Granite Bridge Saw

A computer numerically controlled bridge saw designed for precise cutting of granite and other natural stone slabs into tiles or countertops. This machine tool works stone through cold cutting processes, falling under tariff item 8464.90.00 for machine-tools for working stone.

CNC Stone Contour Cutter

5-axis CNC waterjet and saw combination machine for contouring intricate stone shapes like vanity tops and memorials. This machine tool works stone through cold abrasive water and diamond tooling, qualifying under tariff item 8464.90.00 for machine-tools for working stone.

Concrete Block Router Machine

CNC router equipped with diamond tooling for milling decorative patterns, logos, or splits on concrete blocks and pavers. This machine tool works concrete, a like mineral material, through cold routing processes, falling under tariff item 8464.90.00.

Concrete Cylinder Grinding Machine

Precision grinder for finishing concrete test cylinders to exact length and flatness for compressive strength testing. This machine tool works concrete mineral materials to laboratory tolerances via cold grinding, qualifying under tariff item 8464.90.00.

Crystal Boule Flattener

A crystal boule flattener grinds flats onto semiconductor crystal boules to encode crystal orientation and doping information. It works on hard, brittle mineral-like materials, which places it under tariff item 8464.90.00 for machine-tools for working stone, ceramics or similar mineral materials.

Czochralski Crystal Puller

A Czochralski crystal puller produces monocrystalline silicon boules by pulling a seed crystal from molten silicon in a vacuum chamber, then grinding the boule to a precise diameter. This machine works on mineral-like semiconductor materials, fitting tariff item 8464.90.00 for machine-tools for working stone, ceramics or similar materials.

Diamond Disc Multi-Slab Saw

Horizontal multi-disc saw with 18+ diamond blades for gang-sawing stone blocks into thin slabs simultaneously. This machine tool works stone through cold diamond cutting technology, falling under tariff item 8464.90.00 for machine-tools for working stone.

Diamond Wafer Lapper

A diamond wafer lapper uses diamond slurry to achieve flatness tolerances on semiconductor wafers before polishing. It processes hard, brittle mineral-like materials, which falls under tariff item 8464.90.00 for machine-tools for working stone, ceramics or similar mineral materials.